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Introduction to Information SystemsEssentials for the Internetworked E-Business Enterprise
Irwin/McGraw-Hill Copyright 2002, The McGraw-Hill Companies, Inc. All rights reserved.
C h a p t e r
James A. OBrien
6
Telecommunications
and
Networks
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Identify several major developments and trendsin the industries, technologies, and businessapplications of telecommunications andInternet technologies.
Provide examples of the business value ofInternet, intranet, and extranet applications.
Identify the basic components, functions, andtypes of telecommunications networks used in
business.
Explain the functions of major types oftelecommunications network hardware,software, media, and services.
Chapter Objectives
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Trends in Telecommunications
More electronic commerce, enterprise collaboration,online business operations and strategic advantage in markets
services, acce
Extensive Internet, interconnected local & globaldigital networks, improved transmission channels
Industry Trends
Technology Trends
Application Trends
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Telecommunications Strategic Capabilities
Overcome Geographic Barriers: Capture information aboutbusiness transactions from remote locations.
Overcome Time Barriers: Provide information to remote locations
immediately after it is requested.
Overcome Cost Barriers: Reduce the cost of more traditionalmeans of communications.
Overcome Structural Barriers: Support linkages for competitiveadvantage.
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Internet Applications
Surf andE-mail
Internet Chatand
Discussion Forums
Download andComputer
Search Engines
E-CommerceTransfer
Protocol (FTP)and Telnet
Popular Usesof the
Internet
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Business Value from e-Commerce Applications
Increase Customer Loyalty & Retention
Reduce the Cost of Doing Business
Generate New Revenue Sources
Attract New Customers
Deriving BusinessValue from e-CommerceApplications
Develop New Markets & Channels
Develop New Web-based Products
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Basic Components in a Telecommunications Network
TelecommunicationsSoftware
1
2 3
4
52
PCs, NCs,and OtherTerminals
ComputersTelecommunicationsChannels and Media
TelecommunicationsProcessors
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Wide Area Networks
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California Norway
Belgium
Pennsyl-vania
Manitoba
BritishColumbia
Chile
Ontario
JapanDominicanRepublic
WideAreaNetwork
WAN
El h Edi iJ A OB i S
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Local Area Networks
NetworkServer
SharedDatabase and
Software Packages
SharedPrinter
PCPC
PC PC PC
Internetwork Processor to Other Networks
El h Edi iJ A OB i I d i I f i S
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Other E-business Networks
Router
Intranet
Server
Host System
IntranetServer
The
Internet
Fire wall
Fire wall
RouterExtranet
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Client Server Networking
ClientSystems
Servers
Host Systems/Superservers
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Client/Server Networks and Network Computing
NetworkServer
Host System
Superserver
Client
User InterfaceApplication Processing
Application ControlDistributed Database
Central database control
Heavy duty processing
Server Server
NetPC
Browser-basedUser Interface
Web OSApplication Software
Application
DBMS
DB
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Telecommunications Communication Media
Twisted Pair
Coaxial Cable
Fiber Optics
TerrestrialMicrowave
CommunicationSatellites
CellularTechnologies
Wireless LAN
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Telecommunications Processors and Software
Modems
Multiplexers
InternetworkProcessors
Switches
Routers
Hubs
Gateways
Fire walls
Network OperatingSystem
TelecommunicationsMonitor
Middleware Network Management
Software
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Network Topologies
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The Internets TCP/IP
Application orProcess Layer
Internet Protocol (IP)
Host-to-Host Transport Layer
Network Interface
Physical Layer
Application
LayerPresentation
Layer
SessionLayer
TransportLayer
NetworkLayer
Data LinkLayer
PhysicalLayer
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Chapter Summary
Organizations are becoming internetworkedenterprises that use the Internet, intranets, andother telecommunications networks to support e-business.
Telecommunications has entered a deregulatedand fiercely competitive environment with manyvendors, carriers, and services
A major trend is towards pervasive use of theInternet and its technologies to buildinterconnected enterprise and global networks.
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Chapter Summary (cont)
The major components of anytelecommunications network are:
Terminals,
Telecommunications processors,
Communication channels,
Computers, and
Telecommunications software.
There are several basic types of telecommnetworks, including wide area networks(WANs) and local area networks (LANs).
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i / G ill C i h 2002 h G ill C i All i h d
Chapter Summary (cont)
Key telecommunications networkalternatives include telecommunicationsmedia, processors, software, channels, andarchitectures.